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1. 发明授权

US11611686B2 Video signal processing device, video freeze detecting circuit and method of detecting video freeze 有权
公开(公告)号：US11611686B2
公开(公告)日：2023-03-21
申请号：US16728064
申请日：2019-12-27
申请人： LAPIS SEMICONDUCTOR CO., LTD.
发明人： Tomoyuki Ichikawa
IPC分类号： H04N5/14 , H04N17/00 , G06F11/10 , G06V20/40
摘要： A video signal processing device including a video signal dividing unit that divides a video signal into first to k-th division video signals (k is an integer of 2 or more) for each frame; a video change detecting unit that detects, for each of the first to k-th division video signals, whether or not there has occurred a change in the video signal between the frames, and generates first to k-th video change detection signals representing the detection results; and a video no-change determining unit that generates a video no-change signal indicating that there is no change in the video signal when the number of video change detection signals indicating that there is no change among the first to k-th video change detection signals is greater than a predetermined number.

2. 发明授权

US11610962B2 Semiconductor device and method of manufacturing semiconductor device 有权
公开(公告)号：US11610962B2
公开(公告)日：2023-03-21
申请号：US17211915
申请日：2021-03-25
申请人： LAPIS SEMICONDUCTOR CO., LTD.
发明人： Takamitsu Furukawa
IPC分类号： H01L49/02 , H01L23/522 , H01L27/08
摘要： A semiconductor device including: a semiconductor substrate; a seed layer that is formed on the semiconductor substrate; and wiring that is formed on the seed layer and includes parallel row portions that are arranged at intervals from each other, and in which penetration passages that penetrate the parallel row portions in a direction in which the parallel rows lined up are formed in the parallel row portions.

3. 发明授权

US11567526B2 Output signal generation circuit 有权
公开(公告)号：US11567526B2
公开(公告)日：2023-01-31
申请号：US17737620
申请日：2022-05-05
申请人： LAPIS Semiconductor Co., Ltd.
发明人： Kenjiro Matoba , Kazuhiro Yamashita
IPC分类号： G06F1/04 , H03K19/0185
摘要： An output signal generation circuit includes a first pulse generation circuit configured to receive first information and generate a first pulse signal including the first information, the first pulse signal having a first pulse width that is a minimum pulse width of the first pulse signal, a second pulse generation circuit configured to receive second information and the first pulse signal, and generate a second pulse signal in which the second information is superimposed on the first pulse signal, the second pulse signal having a second pulse width smaller than the first pulse width, and an output circuit configured to output the second pulse signal.

4. 发明授权

US11551624B2 Display device and source driver with local dimming 有权
公开(公告)号：US11551624B2
公开(公告)日：2023-01-10
申请号：US17319074
申请日：2021-05-12
申请人： LAPIS Semiconductor Co., Ltd.
发明人： Hiroaki Ishii , Shinichi Fukuzako
IPC分类号： G09G3/34 , G09G3/36
摘要： Provided is a display panel, a source driver that generates a gradation voltage signal based on an image data signal, a timing controller that supplies the image data signal to the source driver, and an illumination drive unit that controls an amount of light of a backlight that illuminates each of a plurality of areas formed by dividing a display screen in the display panel. The source driver or the timing controller calculates feature values of the image data signal corresponding to each of the plurality of areas of the display panel and supplies a dimming data signal representing the amount of light of the backlight according to the feature values of each area to the illumination drive unit. The illumination drive unit controls the amount of light of the backlight for each of the plurality of areas based on the dimming data signal.

5. 发明授权

US11526002B2 Image distortion correction circuit and display device 有权
公开(公告)号：US11526002B2
公开(公告)日：2022-12-13
申请号：US17215981
申请日：2021-03-29
申请人： LAPIS Semiconductor Co., Ltd.
发明人： Yuki Imatoh
IPC分类号： H04N9/31 , G03B21/14 , G06T3/00 , G02B27/00 , G06T5/00 , B60K35/00 , G02B27/01
摘要： An image distortion correction circuit performs a distortion correction process on an image signal on the basis of distortion correction data to generate a distortion-corrected image signal. The distortion correction data is for correcting coordinate positions of display data fragments corresponding to respective N coordinate positions in the display image to first to N-th distortion correction coordinate positions. The image distortion correction circuit determines a distortion correction coordinate position where abnormality occurs as an abnormal coordinate position among the first to N-th distortion correction coordinate positions on the basis of respective intervals between the adjacent first to N-th distortion correction coordinate positions indicated by the distortion correction data. The image distortion correction circuit corrects a part corresponding to the abnormal coordinate position in the distortion correction data on the basis of at least the two distortion correction coordinate positions excluding the abnormal coordinate position among the first to N-th distortion correction coordinate positions.

6. 发明授权

US11502206B2 Semiconductor wafer manufacturing method and semiconductor device 有权
公开(公告)号：US11502206B2
公开(公告)日：2022-11-15
申请号：US16667498
申请日：2019-10-29
申请人： LAPIS SEMICONDUCTOR CO., LTD.
发明人： Hiroshi Shibata
IPC分类号： H01L29/94 , H01L21/02 , H01L27/02 , H01L49/02
摘要： A semiconductor wafer manufacturing method including: forming a plurality of trench capacitors at a main surface of a semiconductor wafer, wherein each of the plurality of trench capacitors is configured as unit cells that internally include unit trench capacitors, and wherein a length component in a predetermined direction of a layout pattern of trenches of the plurality of trench capacitors is made equivalent, within a fixed tolerance range, to a length component in a direction that intersects the predetermined direction.

7. 发明申请

US20220293063A1 DISPLAY DRIVER SUPPRESSING COLOR UNEVENNESS OF LIQUID CRYSTAL DISPLAY 有权
公开(公告)号：US20220293063A1
公开(公告)日：2022-09-15
申请号：US17828032
申请日：2022-05-31
申请人： LAPIS Semiconductor Co., Ltd.
发明人： Kenichi SHIIBAYASHI , KEIGO OTANI
IPC分类号： G09G3/36
摘要： The disclosure includes bus wiring constituted by wiring lines; a gradation voltage generation circuit that generates M gradation voltages representing brightness levels with M gradations, and applies the M gradation voltages to an intermediate portion on M wiring lines belonging to the bus wiring; a plurality of decoders, each of which receives M gradation voltages via the M wiring lines and selects one of the M gradation voltages according to the pixel data pieces to output the selected gradation voltage; a plurality of output amplifiers that individually amplifies the voltages output from the plurality of decoders and generates the amplified voltages as the plurality of pixel drive voltages; and first and second inter-gradation short circuits that short-circuit one ends of each of the M wiring lines and the other ends of each of the M wiring lines according to a load signal for capturing the pixel data pieces.

8. 发明申请

US20220261031A1 OUTPUT SIGNAL GENERATION CIRCUIT 有权
公开(公告)号：US20220261031A1
公开(公告)日：2022-08-18
申请号：US17737620
申请日：2022-05-05
申请人： LAPIS Semiconductor Co., Ltd.
发明人： Kenjiro MATOBA , Kazuhiro YAMASHITA
IPC分类号： G06F1/04 , H03K19/0185
摘要： An output signal generation circuit includes a first pulse generation circuit configured to receive first information and generate a first pulse signal including the first information, the first pulse signal having a first pulse width that is a minimum pulse width of the first pulse signal, a second pulse generation circuit configured to receive second information and the first pulse signal, and generate a second pulse signal in which the second information is superimposed on the first pulse signal, the second pulse signal having a second pulse width smaller than the first pulse width, and an output circuit configured to output the second pulse signal.

9. 外观设计

USD956707S1 Circuit board 有权
公开(公告)号：USD956707S1
公开(公告)日：2022-07-05
申请号：US29729267
申请日：2020-03-25
申请人： LAPIS Semiconductor Co., Ltd.
设计人： Shigeki Yamauchi

10. 发明申请

US20220199048A1 DISPLAY DRIVER AND DISPLAY APPARATUS 有权
公开(公告)号：US20220199048A1
公开(公告)日：2022-06-23
申请号：US17602243
申请日：2020-04-10
申请人： LAPIS Semiconductor Co., Ltd.
发明人： Hiroyoshi ICHIKURA
IPC分类号： G09G3/36
摘要： A display driver drives a display device including a plurality of data lines and a demultiplexer. The demultiplexer includes a plurality of first switches connected to the respective plurality of data lines, and a series of driving voltages including a plurality of driving voltages is supplied via a first wiring. The demultiplexer supplies the plurality of driving voltages to the respective plurality of data lines via the plurality of first switches. The display driver includes: a voltage multiplexing part that generates the series of driving voltages; a second switch connected between the voltage multiplexing part and the first wiring; and a controller connected to the plurality of first switches and the second switch. The controller switches the second switch from an on state to an off state during a first period and sets the two first switches corresponding to the two data lines to the on state such that the two data lines and the first wiring are connected during a second period that is a part of the first period and in which the second switch is in the off state.

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